Ask yourself, why would I get charged several months, for a one month service. There is nothing explicit on the site at all about automatic renewals. It is so unfortunate that a company has to resort to these tactics.
Here are the prices for the service.
$34.99 -- 1 momth
$19.99 -- 3 months
$16.99 -- 6 months
$17.99 -- 6 months
So, if I sign up for the 1 month service, that is $419.88 a year if I get charged for the entire year. $36 for the most expensive 6 month service.